Quality Recognition ofgreen laser pointer
Laser since its birth, give our all walks of life brought a big leap, in which the application in medicine is to promote the further development of medicine, so that some diseases are better treated. The future of laser in medicine will be further applied. Laser since the 20th century, following the atomic energy, computers, semiconductors, after another very, very important human invention, known as "the fastest knife," "the most accurate of the foot," "the brightest light" and "exotic laser . " The quality ofgreen laser pointershould be recognized carefully.
It's brightness of the sun's 10 billion times. Its principle as early as 1916, has been found that the famous American physicist Albert Einstein, but until 1960 was only the first successful laser manufacturing. Laser is in a theoretical preparation and production practices in the context of the urgent need emerged, and it come out, you get extraordinary fast development, the development of not only the old laser optical science and optical technology gained a new life, and lead to the emergence of a new industry. Laser applications in medicine is divided into three categories: Laser Life Science, laser diagnostics, laser treatment,green laser pointer  treatment is divided into: laser surgery, laser bio-stimulation of the weak non-surgical laser treatment and photodynamic therapy. The quality recognition ofgreen laser pointeris not easy to be finished well. 
Figure 3 shows the soft tissue of various laser wavelengths of light penetrate the length of the approximate number. Length in the near-infrared light penetration near the large, more than in the infrared domain or 3μm below 300nm UV field smaller. Different types of tissue, the light penetration length of the wavelength dependence of the change. Its advantages are: local vasodilation, changes in blood circulation, improve tissue hypoxia and reduce chronic inflammation promote inflammation improved absorption. The advantage of laser organisms: people living in the light of the electromagnetic field, except in special circumstances the harmful effects of light on the little organisms; the use of laser propagation in the atmosphere line features non-contact manner can be applied to organisms, but also the use of fiber-optic laser into the organism's deep. The quality recognition ofgreen laser pointeris the critical step.
Highly directional, forming a very small point to make micro-fine treatment and high spatial resolution measurement possible; rich interaction of light with living organisms, has been used only a small part of the prospect the light. Microwave radar, laser radar and similar, with a narrow laser beam to scan a given area, and draw the radar chart. With the devices and technology, laser radar and imaging in high-precision advantage, the ranging accuracy up to centimeters or even millimeters level, higher than the microwave radar nearly 100 times; angular velocity precision, in theory, higher than the microwave radar more than a hundred million times, is now so high from 1000 to 10,000 times. The most successful military applications of laser radar is to assist navigation, especially the speedometer. Laser speed meter to the on-board navigation computer can provide ultra-precision measurement, the speed error of up to 0.5mm / s. The quality recognition ofgreen laser pointershould be done step by step.
Laser combat laser ranging can be deceptive, it can not determine its true distance or to change the ballistic missile. Laser combat laser can also be interference. Laser Alarm is an alarm system in the normal working hours, set hidden in the distance issue is not visible laser devices, fired at the receiving end of the silicon photocell, and if the normal reception of the entire system without incident; if the laser is blocked, then the receiver received less than laser, indicating that there are circumstances, alarm system alarm, so as to achieve the purpose of warning. Alarm system can transport routes, airports and military facilities, warehouses and other important secret surveillance. The quality recognition ofgreen laser pointerhas the professional procedure to guide the implementation.
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